Wireless pressure testing unit



FIG. 1 is a perspective view of a wireless pressure testing unit;

FIG. 2 is a top view of the wireless pressure testing unit;

FIG. 3 is a bottom view of the wireless pressure testing unit;

FIG. 4 is a first side view of the wireless pressure testing unit;

FIG. 5 is a second side view of the wireless pressure testing unit;

FIG. 6 is a back view of the wireless pressure testing unit; and,

FIG. 7 is a front view of the wireless pressure testing unit.

All broken lines illustrate portions of the wireless pressure testing unit that form no part of the claimed design. 

CLAIM The ornamental design for a wireless pressure testing unit, as shown and described. 